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  • 1
    Electronic Resource
    Electronic Resource
    Effect of balloon angioplasty on high grade symptomatic vasospasm after subarachnoid hemorrhage (1995)
    Springer
    Neurosurgical review 18 (1995), S. 7-13 
    Details
    ISSN: 1437-2320
    Keywords: Aneurysm ; angioplasty ; balloon catheter, intravascular surgery ; subarachnoid hemorrhage ; vasospasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Of 455 cases of ruptured intracranial aneurysm treated with radical surgery from January 1987 to March 1992, 19 cases with high grade symptomatic vasospasm were treated by percutaneous transluminal balloon angioplasty (PTA). The indication for PTA was high grade symptomatic vasospasm which does not respond to conservative medical treatment. Of the 36 segments of vasospastic arteries, severe vasospams (angiographical constriction more than 50% of diameter on admission) was observed in 67%. PTA dialted these vasospastic arteries significantly (diameter of more than 75% of diameter on admission) in 83%. Follow up angiography revealed neither recurrence of vasospasm nor chronic atherosclerotic changes. Clinical improvement within 24 hours after PTA was observed in 63% of cases (7 of 17 cases with consciousness disturbance, 5 of 16 cases with motor weakness and one of 7 cases with aphasia). Outcomes at the time of discharge were excellent in 10 cases, good in 3, fair in 4, and lethal in 2. SPECT study before and after PTA confirmed improvement of cerebral blood flow in 3 out of 5 cases investigated. PTA for high grade symptomatic vasospasm after subarachnoid hemorrhage is considered an effective treatment method for the patient who does not respond to medical therapy. Immediate improvement of angiographical and clinical findings were frequently observed immediately after PTA. Exact indication and timing of PTA should be postulated after much more cases have been treated with this methal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00416470
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  • 2
    Electronic Resource
    Electronic Resource
    Balloon angioplasty immediately after surgical clipping for symptomatik vasospasm on admission. Report of four cases (1995)
    Springer
    Neurosurgical review 18 (1995), S. 79-84 
    Details
    ISSN: 1437-2320
    Keywords: Angioplasty ; balloon catheter ; subarachnoid hemorrhage ; surgical treatment ; vasospasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In spite of recent advancements in the management of ruptured aneurysm, there are still controversies as to how to threat the patients in serious conditions, one of these concerning whether to operate patients admitted with symptomatic vasospasm (vasospasm on admission) and when. While early surgery may protect patient from further rupturing, it may also increase risk of worsening by inducing much more vasospasm. Four cases of severe vasospasm associated with aneurysmal subarachnoid hemorrhage (SAH) were reported. All of these cases showed symptomatic and angiographical vasospasm on their admission 3–11 days after initial attack of SAH. All cases had a preoperative clinical grading using Hunt & Kosnik of IV, and were treated by early surgery with clipping followed by percutaneous balloon angioplasty (PTA) immediately after clipping. Two cases returned to their previous occupations, while one case remained bed ridden and one died in spite of therapy. Early surgery in this series actually prevented further rupturing, but it is not clear whether PTA immediately after clipping may prevent further deterioration by progression of vasospasm. For selected cases especially those with reversible ischemia, this combined treatment may offer more favorable results than late surgery with conservative medical care. Further investigation is necessary to support the validity of this therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00417662
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Longitudinal study of patients with TMJ dysfunction by tomographic examination: Condylar position and clinical sign (1993)
    Springer
    Oral radiology 9 (1993), S. 41-47 
    Details
    ISSN: 1613-9674
    Keywords: Tomography ; Temporomandibular joint ; Longitudinal study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract For patients with TMJ dysfunction, operators often change the condylar position by various methods. The aim of this study is to investigate how much the changes with time of condylar positions are related to the changes of clinical signs. The subjects were 584 joints of 127 patients with TMJ dysfunction to whom the serial lateral TMJ tomography was performed more than twice. In the most of cases where the condylar position had moved downward, inter-incisal distance had increased and TMJ noise had ameliorated. Furthermore, in many cases where the condylar position had moved forward, the amelioration of the TMJ pain was observed. It was considered that those ameliorations occurred because the positional relationship between the condylar head and the articular disk or posterior attachment had been improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349102
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  • 4
    Electronic Resource
    Electronic Resource
    A study on reliability of the tomographic image of the temporomandibular joint (1989)
    Springer
    Oral radiology 5 (1989), S. 11-22 
    Details
    ISSN: 1613-9674
    Keywords: Temporomandibular joint ; Tomography ; Blurred image
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary For this study, seven different types of phantom were made simulating the condyle. The phantoms attached to a human dry skull were tomographed using the Polytome-U, under identical conditions to those of tomography for patients. There was no significant difference of the images between tube side and film side of the mandible. The images of the medial part of the TMJ were clearer than that of the lateral part. A discrepancy of contours on the focal plane between the phantom and the tomographic image occurred when the inclination of the phantom surface was larger than the maximum exposure angle. Concerning the influence of focal movements to image quality, the images obtained from hypocycloidal movements were superior with minimum superimposition, although the contrast of the image varied when the phase of the hypocycloidal movements were altered. Any sectional images were not manifested with the phantoms when the inclination of the phantom surface was larger than 23 degrees. Furthermore, 106 condyles from human dry skull were examined on the area of which the inclination of the condylar surface was less than 23 degrees. The mean latero-medial distance of the area was 14.1mm, which corresponded to 75% of whole latero-medial distance of the condyle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02350098
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    Paper (German National Licenses)
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